This is a transcript of a cockpit voice recorder from United Airlines Flight #93, one of four airlines hijacked on 11 September 2001. It was the only one of the four planes that did not reach its intended target, instead crashing in an empty field just outside Shanksville, Pennsylvania, about 150 miles northwest of Washington, D.C. The 9/11 Commission (through testimony, tapes of passengers' phone calls, and the flight data recorders recovered from the crash) determined that crew and passengers, alerted through phone calls to loved ones, attempted to subdue the hijackers. The 9/11 Commission concluded that the hijackers crashed the plane to keep the crew and passengers from gaining control.